Locomotive electric alarm system.



G. NOREAU. LoooMoTIvE ELECTRIC ALARM SYSTEM.

APPLICATION FILED JAN.14, 1908. Patented Jan.

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w/'rNEssEs G. mommy.` LOGOMOTIVE ELECTRIC ALARM SYSTEM.

APPLICATION IILED JAN. 14, 1908.

Patented Jan. 19. 1909.

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' ATTORNEYS W-TNESSES acconto* MNGS, OF QUEBEC, CANADA.

ne. crecen.

Application iilcll January 14, 1593.

of' the signaling mechanism is greatly in-I creased.

v Referenceis to be had to the accompanying drawings 'forming a. part of this specification, in which similar characters ci reference indicate corresponding parte in all the figures.

Figure l is a vertical section showingv a locomotive, a railway 'track and a` third rail, the locomotive being provided with portion of the Contact mechanism, and further pro- *videl` with a battery, bell and local testing: circuit, ll ready for use; Fig. 2 is a detail section showingr the cont-act plunger and the contact roller carri-ed by it, this roller engr-ap*- ing the third rail; lli-ifs, and -i are sections showing how the third rail is insulated :troni the track; ,dig. is a diagram showing the electrical connections `thereby ltwo ci. nes mutually Warn each other when they happen to be in the saine block; and (3 a diashor-.ying iny imp? rement as ap plied to a. switch and used the protection ot an approaching train.

A locomotive is shown at 7 and is providerwith service Wheels 8 and with axles one ot which is shown at 9. lnressing upon this axle is o spring l() carried by the cab li and insulated by aid et :istrip l2 ci hard rubber or other suitable insulating,v material. it l5 is a continuousring bell. A Wire i6 leads from this bell to a pole changing switch 18 connected with a battery 17. A Wire 16 connects the switch 1S with a Wire 19. The battery l? is connected nfith the, pole changing switch 18 by aid oit' Wires 1S, i8, l. A

Wire i9 is in electrical communication withv ,Specicat-ion of Lei;

atented Jan. 19,1909.

Serial No. 4:19380.

a plate 2O .ha-ving a metallic sleeve 2l entending don'i'iwardly'. fr plate 22 is provided with a sleeve 23 extending` downwardly therefrom through the floor oi t-he cab, this sleeve encircling the metallic sleeve 2l and holding` toe saine lirinly in position.

` fr plunger 2st, having the form oi c cylin.- drical rod, is sndably mounted Within the nietallic sleeve 2l. lEhe lower end of the plunger i provided with a fork 25 and with oil 'tube' JP, andcarries a roller 26, which is tlnis'rendered self-oilinfr, and said roller is adapted to a thiro rail 2T. This third rail is made up of a niunber of separate rail members connected electrically together by copper strips, bands or wires 2P, and held in position by chairs 2S, faced internally with plates 29 of insulating` material, these plates being bent partially over the foot of the third rail and being provided with spikes 30, for fastening` the chairs Q8 upon sills or cross ties 3l. t The chairs 2S are staggered relatively to cachv other, as will be understood from iii l.

rEhe plunger 2i is provided with a slot 32 through Whiclrcxtends a pin The plun ger is also provided with a threaded portion 3d and a milled nut is screwed upon this threaded portion for purposes of adjusting' the plunger. ,i lent spring 3G is mounted ,upon the plat-e and engages the nut :tor the purpose of holdingl it rinly in position. Connected with the wires 13, lli is a wire 3T which leads to a push button 38. Frein the latter a wire 39 leads to the Wires 1S, il). The equipments of the two locomotives are exactly alike, except that inthe locomotive traveling in one direction the batteries are reversed relatively to those. traveling in the opposite direction, as will be understood from ll i A snow scraper e0, having the :torno of a brush, is provided 'with a tube ii-1 having a slot 42, and this tube fits slidably upon a rod A pin di extends through the rod 43 and isA rigid in relation thereto, this pin extending through the slot l2 By means of an insulating plate l5 'the rod 43 is insulated rorn the cab l'l.

The operator, in order to adjust the contact plunger 24 merely adjusts the nut 35. This nut taken in connection with the spring 36 determines the tension of the roller 26 upon the third rail, and consequently the contact of this roller and the third rail may member o switch 18, wire 16a, belll, wires 14, 37, button 38,' wires 39, 16I,`rightliand member of switch 18, wire 18C, back to battery 17. This rings the bell 15 and shows the condition of the battery.

A track is shown at 46 in Fig. 5. In Fig;

6 the invention is shown as applied to a'- switch. The track is shown at 47, the switch tongue at 48, the switch rod'at 49, a contact at 50, the third rail at 51 and connecting wires at 52, 52a.

The operation of my device "is asffolloivs: Each engineer, before starting out on a trip tests his local circuit as above described. Finding the same in order,.no further attention may be paid the appara *is for the time being. Suppose, now, thaiJ wwo locomotives approach each other, as indicated in Fig. 5. When these locomotives arrive upon the same portion of the third rail 27 a circuit is completed as follows: battery 17 of locomotive at the right of Fig. 5, wires 18", 18,

left-hand member of switch 18, wire 16214 bell 15, wires 14, 13, spring 10, axle 9, wheel 8, rail 46, to ground, through ground to locomotive shown at the left of Fig. 5, wheel' 8 of this locomotive, aXle 9, spring 10, Wire 13wire 14, bell 15, wire 16, left-hand member of switch 18, Wire 18, battery 17, Wire 18h, right-hand member ofvswitch 18, wires 16, 19, plunger 25, roller 26, third rail 27, back to locomotive at the right, roller 26 of this locomotive, fork 25, plunger 24, wire 19, vwire 16, righthand member of switch 18, wire 16D, back to battery 17, whence the current started. This rings the bells 15 upon both locomotives and the engineers being thus warned take appropriate action to prevent a casualty.

Where the switch shown in Fig. 6 is used, the warning is given as follows: The switch 48 being open or misplaced so that the tendency would be to divert the locomotive from.

the main track, the rod 49 occupies such position that the contact 50 is closed. Normally this contact should be open shown in Fig. 6. If, now, a locomotive approaches so as to make contact with the third rail 51, a circuit is completed substantially as above traced with regard to the locomotive but proceeding therefrom as follows: 'third rail 51, wire 52, contact 50, wire 52a to track 47, thenceI to ground' and back to locomotive. This warns the engineer.

I do not limit myself to the use of any particular materials in constructing the parts above described. Neither do I limit myself to the exact construction of any particular part, except in so far as my claims,

may specify such construction.

Having thus described my invention, I'

material and provided with a inetal-lic sleeve i extending through said opening and 'concentric to said first-mentioned sleeve, a plunger slidably mounted within said metal- .lic sleeve and provided with a slot, a 'pin extending through said slot'and engaging said metal-lic sleeve soas to prevent 4sai plunger' fromturning, a nut adjustably- -uiount'ed upon said plunger, a spring engaging said nut so as to force said plunger downward, a member mounted upon the ,l

lower end oi' said plunger and `adapted to i engage a third rail, electric connections for said third-rail and for said 'first-mentioned' metallic plate, means controllable by moye-v 'ments of rolling stockpfor energizing said electric connections, and an` alarm member to be energized. by said electric connections.

2. In ,an' electric alarm signal, the combination of a .circuit including an alarm member, a source of electricity for energizclosing a circuit through-said battery, said third rail-and said alarm member, said contact mechanism comprising a sleeve, a plunger slidably mounted therein and provided with a member for engaging said third `ing the same, a third rail, and a contact for rail, means foipreventing said plunger4 from turning, a nut adjustably mounted upon said plunger, a sui-tace acting as a limiting stop'to be-engagcd by said nut so as lto prevent excessive 'movement of said a nulI mounted upon said plunger and adjustable in relation thereto, a .sprung engaging said nut for the purpose of two subscribing witnesses. pressing tlm plunger in one direction, and a GEORGE N OREAU. mutuel, roller mounted upon said plunger VVitneses: v :nul :ulnptod to engage said third rail, the E. G. MEREDITH, l'nrk having self oilng tubes. J. E. BANKS.

nclnsnfr said in In testimon whereof I have sifrned m n p l a name to this s ,ecifieation in the presence of 

